*Postdoctoral fellowship in model-based fMRI of psychiatric disorders* The lab of Prof. Tiago V. Maia is seeking a postdoctoral fellow to conduct research on model-based fMRI of psychiatric disorders. The lab is located in the School of Medicine of the University of Lisbon (Portugal). There may also be opportunities to spend time at the Department of Psychiatry of Columbia University (USA), where Prof. Maia also has a faculty appointment. Research in the lab focuses on using fMRI, neurocomputational models, and behavioral experimentation to understand the neural bases of cognition and emotion and the disruption of these processes in psychiatric disorders. Additional information, including a list of publications, is available on Prof. Maia's web page: http://childpsych.columbia.edu/brainimaging/CV_maia.html Talented candidates from any background will be considered, but preference will be given to candidates with expertise in one or more of the following areas: fMRI, computational neuroscience, and/or behavioral experimentation. Funding is available immediately for a project investigating reinforcement learning in Tourette syndrome using a combination of computational modeling and fMRI ('model-based fMRI'). The successful candidate would also have opportunities to work on other projects. Candidates should send a CV and a letter describing their research interests to MaiaT(a)nyspi.columbia.edu. Reference letters are preferred but optional at this stage.